8 months ago
Base Salary
$160k - $240k/yr
Responsibilities
- Lead the design, architecture, and optimization of Knot’s Android SDK.
- Profile and improve memory behavior, garbage collection, CPU usage, allocation behavior, concurrency, and rendering.
- Design stable public APIs and document them clearly for partner developers.
- Strengthen unit, UI automation, integration, and performance test coverage.
- Co-own Android CI/CD workflows to support reliable and safe releases.
- Investigate complex production issues and build guardrails to prevent recurrence.
- Produce documentation that improves the SDK integration experience.
- Represent Android platform considerations in technical planning and reviews.
- Advocate for integration best practices internally and externally.
- Promote high standards for clarity, reliability, and engineering craftsmanship.
Requirements
- Strong debugging skills using Android profiling tools.
- Deep understanding of memory management, garbage collection, threading, and CPU analysis.
- Experience with asynchronous and multithreaded systems.
- Ability to design, validate, and document public SDK APIs.
- Strong testing practices, including UI automation.
- Familiarity with Android CI/CD systems and willingness to improve them.
- Comfort validating releases end to end.
- Clear communication and effective collaboration skills.
- Experience with feature flagging and staged rollout strategies.
- Deep experience with WebView, including custom WebViewClient, WebChromeClient, resource handling, messaging, and hybrid debugging.
- Strong experience with Java for Android development.
- Experience building and maintaining Android libraries.
- Familiarity with Gradle build tooling and performance tuning.
Benefits
- Competitive base salary, annual bonus, equity, and benefits are offered.
- 100% medical, dental, and vision insurance coverage for the employee and dependents in the U.S.
- Unlimited paid time off and parental leave.
- Beautiful office in New York City's Flatiron district.
- Herman Miller Aeron desk chair.
- Snacks, frequent lunches, and occasional dinner for employees working late.
About Knot
Knot builds a merchant connectivity platform and SDK that let banks and fintechs enable card-on-file updates, receipt-level transaction data, and 1-click checkout across hundreds of online merchants. Founded in 2021 and headquartered in New York City, it sells APIs embedded in financial apps; customers cited include American Express, PayPal, BILT, and Step. The company raised a Series A in 2024.